Set *DefaultBRColorMode: None in the vendor PPD so every job sends
<</UseCIEColor false>>: Brother's Normal/Vivid modes enable the printer's
own CIE conversion, which washed the colours out.
Add six APPrinterPreset entries mapping print-color-mode and
print-quality from driverless (AirPrint/IPP) clients onto the Brother
device options; they use the notation CUPS generates itself (Apple
metadata as 'key value' pairs, PPD options as '*Name Value'), because
key=value strings are silently discarded. print-quality is 3/4/5.
Add the PRINTER_OPTIONS env var: whitespace-separated key=value pairs
applied as queue defaults on every start via lpadmin -o, validated
against the queue's PPD, with warnings instead of a failed startup.
Document all of it in the README. The VividNoCIE candidate was dropped
after test prints showed no difference from None. Archive the OpenSpec
change and sync the printserver/cups spec with the two new
requirements.
Moves the completed change to
openspec/changes/archive/2026-10-18-advertise-valid-ipps-certificate/ and syncs
the printserver/cups capability into openspec/specs/: the image dependency
requirement now mentions the TLS tooling, and two requirements are added for the
name-valid _ipps certificate and for starting cleanly on stale runtime state.
The queue was still advertised over mDNS while cupsd never bound TCP 631:
a rootless Podman container on the host network cannot bind the privileged
port. Apple clients then discovered a printer they could not reach and
reported a confusing _ipps connection failure.
* entrypoint.sh: verify that CUPS accepts connections on 631 after startup
and exit with an actionable message otherwise
* entrypoint.sh: mark the script executable in the repository
* cupsd.conf: drop BrowseRemoteProtocols, which CUPS 2.4 no longer supports
and which logs an error on every start
* README: add a troubleshooting section for the port-binding failure and the
_ipps/TLS certificate requirement, and document the /etc/cups bind-mount
caveat plus the CUPS 3 PPD deprecation
Moves the completed change to openspec/changes/archive/2026-10-18-add-cups-printserver-container/ and syncs the printserver/cups capability into openspec/specs/.
The HL-4150CDN emulates PostScript 3, so CUPS converts client documents to PostScript and forwards them to socket://<ip>:9100. The official BR-Script3 PPD turns device options (tray, duplex, colour, media type, toner save, ...) into setpagedevice instructions. This drops the i386 multiarch runtime and the broken Brother vendor filter chain, and removes the unused Brother Linux packages from the repo.
juergen